汽車側(cè)碰撞中三歲兒童乘員的動(dòng)力學(xué)響應(yīng)和損傷防護(hù)研究.pdf

1、湖南大學(xué)碩士學(xué)位論文汽車側(cè)碰撞中三歲兒童乘員的動(dòng)力學(xué)響應(yīng)和損傷防護(hù)研究姓名：高偉申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：車輛工程指導(dǎo)教師：楊濟(jì)匡20080509AbstractInvehicleaccident，thecasualty’srateofchildreninchinaisabout25times0fEuropeanand26times0ftheuniteStatesAccordingtoastudydonebyWilliamsoneta1(

2、1995／2000)，childreninthe3—4yearsagegroupaccountformorepassengerfatalities(approximately455％)thananyotheragegroup：Becauseoccupantsseatedonthestrucksideofavehicleinasideimpactcollision(ie，nearsideoccupants)areatthehighestr

3、iskofseriousandfatalinjuriesbecauseofdirectloadingbythestruckdoorInordertoimprovethesafetyoftoddlerincar，theresearchon3yearsoldchildoccupants’injuryandprotectioninsideimpacthasimportantsignificanceTheaimofthispaperistode

4、velopandValidatetheCRS(childrestraintsvstem)modelandthereardoorassemblymodelApplyingPSM(PrescribedStructureMotion、substructuremethodtostudythe3years0ldchild0ccupants’dynamicresponseandinjurymechanisminsideimpactSoitcanpr

5、oVideaneffectiVemethodtoimprovethesafetyofchildandinjurypreVentionTheCRSmodelandthereardoorassemblymodelweredeVelopedbymeansofdvnamicsimulationofmultibodycouplingwithfiniteelementmethodThewholesimulationmodelwasvalidated

6、inaccordancewithtestOnthebaseofmodelvalidation，thepapefanalysisedtheinfluenceofreleVantparametersoftheCRSonchildrenOccupantThepaperdeveloped5一pointrestraint，thetrayshieldrestraintandtheTshieldrestraintmodelBycontfastanal

7、ysisthe3years0ldchildoccupants’kinematicresponseanddynamicusingthethreekindsofCRSatdifferentimpactVelocity，thepreliminaryevaluationofthediffefentchildseatbeltprotectioneffectonthechildrenOccupantwasobtainedTheresultsofth

8、eresearchasf6Uowsf1)Thedepthofchildseatsidewing、thepositionofchildseatseatbelt、thestiffnessofchildseatseatbelt、thefrictioncoefficientbe倆eenchildseatandbench、mefrictioncoefficientbetweench訂ddummyandchildseathasimportantin

9、nuenceonchildrenoccupantdynamicresponseByadjustingthedesignparametersofCRScouldreducetheriskofchildrenoccupantsinsideimpact(2)Thetrayshieldharnesshasthebestperfbrmanceofprotectionfbrchildoccupants，thefivepointharnessisbe